src/gallium/auxiliary/util/u_tile.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 /**
  29  * RGBA/float tile get/put functions.
  30  * Usable both by drivers and state trackers.
  31  */
  32
  33
  34 #include "pipe/p_defines.h"
  35 #include "util/u_inlines.h"
  36
  37 #include "util/u_format.h"
  38 #include "util/u_math.h"
  39 #include "util/u_memory.h"
  40 #include "util/u_rect.h"
  41 #include "util/u_tile.h"
  42
  43
  44 /**
  45  * Move raw block of pixels from transfer object to user memory.
  46  */
  47 void
  48 pipe_get_tile_raw(struct pipe_context *pipe,
  49                   struct pipe_transfer *pt,
  50                   uint x, uint y, uint w, uint h,
  51                   void *dst, int dst_stride)
  52 {
  53    const void *src;
  54
  55    if (dst_stride == 0)
  56       dst_stride = util_format_get_stride(pt->resource->format, w);
  57
  58    if (u_clip_tile(x, y, &w, &h, &pt->box))
  59       return;
  60
  61    src = pipe->transfer_map(pipe, pt);
  62    assert(src);
  63    if(!src)
  64       return;
  65
  66    util_copy_rect(dst, pt->resource->format, dst_stride, 0, 0, w, h, src, pt->stride, x, y);
  67
  68    pipe->transfer_unmap(pipe, pt);
  69 }
  70
  71
  72 /**
  73  * Move raw block of pixels from user memory to transfer object.
  74  */
  75 void
  76 pipe_put_tile_raw(struct pipe_context *pipe,
  77                   struct pipe_transfer *pt,
  78                   uint x, uint y, uint w, uint h,
  79                   const void *src, int src_stride)
  80 {
  81    void *dst;
  82    enum pipe_format format = pt->resource->format;
  83
  84    if (src_stride == 0)
  85       src_stride = util_format_get_stride(format, w);
  86
  87    if (u_clip_tile(x, y, &w, &h, &pt->box))
  88       return;
  89
  90    dst = pipe->transfer_map(pipe, pt);
  91    assert(dst);
  92    if(!dst)
  93       return;
  94
  95    util_copy_rect(dst, format, pt->stride, x, y, w, h, src, src_stride, 0, 0);
  96
  97    pipe->transfer_unmap(pipe, pt);
  98 }
  99
 100
 101
 102
 103 /** Convert short in [-32768,32767] to GLfloat in [-1.0,1.0] */
 104 #define SHORT_TO_FLOAT(S)   ((2.0F * (S) + 1.0F) * (1.0F/65535.0F))
 105
 106 #define UNCLAMPED_FLOAT_TO_SHORT(us, f)  \
 107    us = ( (short) ( CLAMP((f), -1.0, 1.0) * 32767.0F) )
 108
 109
 110
 111 /*** PIPE_FORMAT_Z16_UNORM ***/
 112
 113 /**
 114  * Return each Z value as four floats in [0,1].
 115  */
 116 static void
 117 z16_get_tile_rgba(const ushort *src,
 118                   unsigned w, unsigned h,
 119                   float *p,
 120                   unsigned dst_stride)
 121 {
 122    const float scale = 1.0f / 65535.0f;
 123    unsigned i, j;
 124
 125    for (i = 0; i < h; i++) {
 126       float *pRow = p;
 127       for (j = 0; j < w; j++, pRow += 4) {
 128          pRow[0] =
 129          pRow[1] =
 130          pRow[2] =
 131          pRow[3] = *src++ * scale;
 132       }
 133       p += dst_stride;
 134    }
 135 }
 136
 137
 138
 139
 140 /*** PIPE_FORMAT_Z32_UNORM ***/
 141
 142 /**
 143  * Return each Z value as four floats in [0,1].
 144  */
 145 static void
 146 z32_get_tile_rgba(const unsigned *src,
 147                   unsigned w, unsigned h,
 148                   float *p,
 149                   unsigned dst_stride)
 150 {
 151    const double scale = 1.0 / (double) 0xffffffff;
 152    unsigned i, j;
 153
 154    for (i = 0; i < h; i++) {
 155       float *pRow = p;
 156       for (j = 0; j < w; j++, pRow += 4) {
 157          pRow[0] =
 158          pRow[1] =
 159          pRow[2] =
 160          pRow[3] = (float) (*src++ * scale);
 161       }
 162       p += dst_stride;
 163    }
 164 }
 165
 166
 167 /*** PIPE_FORMAT_Z24_UNORM_S8_USCALED ***/
 168
 169 /**
 170  * Return Z component as four float in [0,1].  Stencil part ignored.
 171  */
 172 static void
 173 s8z24_get_tile_rgba(const unsigned *src,
 174                     unsigned w, unsigned h,
 175                     float *p,
 176                     unsigned dst_stride)
 177 {
 178    const double scale = 1.0 / ((1 << 24) - 1);
 179    unsigned i, j;
 180
 181    for (i = 0; i < h; i++) {
 182       float *pRow = p;
 183       for (j = 0; j < w; j++, pRow += 4) {
 184          pRow[0] =
 185          pRow[1] =
 186          pRow[2] =
 187          pRow[3] = (float) (scale * (*src++ & 0xffffff));
 188       }
 189       p += dst_stride;
 190    }
 191 }
 192
 193
 194 /*** PIPE_FORMAT_S8_USCALED_Z24_UNORM ***/
 195
 196 /**
 197  * Return Z component as four float in [0,1].  Stencil part ignored.
 198  */
 199 static void
 200 z24s8_get_tile_rgba(const unsigned *src,
 201                     unsigned w, unsigned h,
 202                     float *p,
 203                     unsigned dst_stride)
 204 {
 205    const double scale = 1.0 / ((1 << 24) - 1);
 206    unsigned i, j;
 207
 208    for (i = 0; i < h; i++) {
 209       float *pRow = p;
 210       for (j = 0; j < w; j++, pRow += 4) {
 211          pRow[0] =
 212          pRow[1] =
 213          pRow[2] =
 214          pRow[3] = (float) (scale * (*src++ >> 8));
 215       }
 216       p += dst_stride;
 217    }
 218 }
 219
 220 /*** PIPE_FORMAT_S8X24_USCALED ***/
 221
 222 /**
 223  * Return S component as four uint32_t in [0..255].  Z part ignored.
 224  */
 225 static void
 226 s8x24_get_tile_rgba(const unsigned *src,
 227                     unsigned w, unsigned h,
 228                     float *p,
 229                     unsigned dst_stride)
 230 {
 231    unsigned i, j;
 232
 233    for (i = 0; i < h; i++) {
 234       float *pRow = p;
 235
 236       for (j = 0; j < w; j++, pRow += 4) {
 237          pRow[0] =
 238          pRow[1] =
 239          pRow[2] =
 240          pRow[3] = (float)((*src++ >> 24) & 0xff);
 241       }
 242
 243       p += dst_stride;
 244    }
 245 }
 246
 247 /*** PIPE_FORMAT_X24S8_USCALED ***/
 248
 249 /**
 250  * Return S component as four uint32_t in [0..255].  Z part ignored.
 251  */
 252 static void
 253 x24s8_get_tile_rgba(const unsigned *src,
 254                     unsigned w, unsigned h,
 255                     float *p,
 256                     unsigned dst_stride)
 257 {
 258    unsigned i, j;
 259
 260    for (i = 0; i < h; i++) {
 261       float *pRow = p;
 262       for (j = 0; j < w; j++, pRow += 4) {
 263          pRow[0] =
 264          pRow[1] =
 265          pRow[2] =
 266          pRow[3] = (float)(*src++ & 0xff);
 267       }
 268       p += dst_stride;
 269    }
 270 }
 271
 272
 273 /**
 274  * Return S component as four uint32_t in [0..255].  Z part ignored.
 275  */
 276 static void
 277 s8_get_tile_rgba(const unsigned char *src,
 278                  unsigned w, unsigned h,
 279                  float *p,
 280                  unsigned dst_stride)
 281 {
 282    unsigned i, j;
 283
 284    for (i = 0; i < h; i++) {
 285       float *pRow = p;
 286       for (j = 0; j < w; j++, pRow += 4) {
 287          pRow[0] =
 288          pRow[1] =
 289          pRow[2] =
 290          pRow[3] = (float)(*src++ & 0xff);
 291       }
 292       p += dst_stride;
 293    }
 294 }
 295
 296 /*** PIPE_FORMAT_Z32_FLOAT ***/
 297
 298 /**
 299  * Return each Z value as four floats in [0,1].
 300  */
 301 static void
 302 z32f_get_tile_rgba(const float *src,
 303                    unsigned w, unsigned h,
 304                    float *p,
 305                    unsigned dst_stride)
 306 {
 307    unsigned i, j;
 308
 309    for (i = 0; i < h; i++) {
 310       float *pRow = p;
 311       for (j = 0; j < w; j++, pRow += 4) {
 312          pRow[0] =
 313          pRow[1] =
 314          pRow[2] =
 315          pRow[3] = *src++;
 316       }
 317       p += dst_stride;
 318    }
 319 }
 320
 321 /*** PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED ***/
 322
 323 /**
 324  * Return each Z value as four floats in [0,1].
 325  */
 326 static void
 327 z32f_x24s8_get_tile_rgba(const float *src,
 328                          unsigned w, unsigned h,
 329                          float *p,
 330                          unsigned dst_stride)
 331 {
 332    unsigned i, j;
 333
 334    for (i = 0; i < h; i++) {
 335       float *pRow = p;
 336       for (j = 0; j < w; j++, pRow += 4) {
 337          pRow[0] =
 338          pRow[1] =
 339          pRow[2] =
 340          pRow[3] = *src;
 341          src += 2;
 342       }
 343       p += dst_stride;
 344    }
 345 }
 346
 347
 348 void
 349 pipe_tile_raw_to_rgba(enum pipe_format format,
 350                       void *src,
 351                       uint w, uint h,
 352                       float *dst, unsigned dst_stride)
 353 {
 354    switch (format) {
 355    case PIPE_FORMAT_Z16_UNORM:
 356       z16_get_tile_rgba((ushort *) src, w, h, dst, dst_stride);
 357       break;
 358    case PIPE_FORMAT_Z32_UNORM:
 359       z32_get_tile_rgba((unsigned *) src, w, h, dst, dst_stride);
 360       break;
 361    case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 362    case PIPE_FORMAT_Z24X8_UNORM:
 363       s8z24_get_tile_rgba((unsigned *) src, w, h, dst, dst_stride);
 364       break;
 365    case PIPE_FORMAT_S8_USCALED:
 366       s8_get_tile_rgba((unsigned char *) src, w, h, dst, dst_stride);
 367       break;
 368    case PIPE_FORMAT_X24S8_USCALED:
 369       s8x24_get_tile_rgba((unsigned *) src, w, h, dst, dst_stride);
 370       break;
 371    case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 372    case PIPE_FORMAT_X8Z24_UNORM:
 373       z24s8_get_tile_rgba((unsigned *) src, w, h, dst, dst_stride);
 374       break;
 375    case PIPE_FORMAT_S8X24_USCALED:
 376       x24s8_get_tile_rgba((unsigned *) src, w, h, dst, dst_stride);
 377       break;
 378    case PIPE_FORMAT_Z32_FLOAT:
 379       z32f_get_tile_rgba((float *) src, w, h, dst, dst_stride);
 380       break;
 381    case PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED:
 382       z32f_x24s8_get_tile_rgba((float *) src, w, h, dst, dst_stride);
 383       break;
 384    default:
 385       util_format_read_4f(format,
 386                           dst, dst_stride * sizeof(float),
 387                           src, util_format_get_stride(format, w),
 388                           0, 0, w, h);
 389    }
 390 }
 391
 392 void
 393 pipe_tile_raw_to_unsigned(enum pipe_format format,
 394                           void *src,
 395                           uint w, uint h,
 396                           unsigned *dst, unsigned dst_stride)
 397 {
 398   util_format_read_4ui(format,
 399                        dst, dst_stride * sizeof(float),
 400                        src, util_format_get_stride(format, w),
 401                        0, 0, w, h);
 402 }
 403
 404 void
 405 pipe_tile_raw_to_signed(enum pipe_format format,
 406                           void *src,
 407                           uint w, uint h,
 408                           int *dst, unsigned dst_stride)
 409 {
 410   util_format_read_4i(format,
 411                       dst, dst_stride * sizeof(float),
 412                       src, util_format_get_stride(format, w),
 413                       0, 0, w, h);
 414 }
 415
 416 void
 417 pipe_get_tile_rgba(struct pipe_context *pipe,
 418                    struct pipe_transfer *pt,
 419                    uint x, uint y, uint w, uint h,
 420                    float *p)
 421 {
 422    pipe_get_tile_rgba_format(pipe, pt, x, y, w, h, pt->resource->format, p);
 423 }
 424
 425
 426 void
 427 pipe_get_tile_rgba_format(struct pipe_context *pipe,
 428                           struct pipe_transfer *pt,
 429                           uint x, uint y, uint w, uint h,
 430                           enum pipe_format format,
 431                           float *p)
 432 {
 433    unsigned dst_stride = w * 4;
 434    void *packed;
 435
 436    if (u_clip_tile(x, y, &w, &h, &pt->box)) {
 437       return;
 438    }
 439
 440    packed = MALLOC(util_format_get_nblocks(format, w, h) * util_format_get_blocksize(format));
 441    if (!packed) {
 442       return;
 443    }
 444
 445    if (format == PIPE_FORMAT_UYVY || format == PIPE_FORMAT_YUYV) {
 446       assert((x & 1) == 0);
 447    }
 448
 449    pipe_get_tile_raw(pipe, pt, x, y, w, h, packed, 0);
 450
 451    pipe_tile_raw_to_rgba(format, packed, w, h, p, dst_stride);
 452
 453    FREE(packed);
 454 }
 455
 456
 457 void
 458 pipe_put_tile_rgba(struct pipe_context *pipe,
 459                    struct pipe_transfer *pt,
 460                    uint x, uint y, uint w, uint h,
 461                    const float *p)
 462 {
 463    pipe_put_tile_rgba_format(pipe, pt, x, y, w, h, pt->resource->format, p);
 464 }
 465
 466
 467 void
 468 pipe_put_tile_rgba_format(struct pipe_context *pipe,
 469                           struct pipe_transfer *pt,
 470                           uint x, uint y, uint w, uint h,
 471                           enum pipe_format format,
 472                           const float *p)
 473 {
 474    unsigned src_stride = w * 4;
 475    void *packed;
 476
 477    if (u_clip_tile(x, y, &w, &h, &pt->box))
 478       return;
 479
 480    packed = MALLOC(util_format_get_nblocks(format, w, h) * util_format_get_blocksize(format));
 481
 482    if (!packed)
 483       return;
 484
 485    switch (format) {
 486    case PIPE_FORMAT_Z16_UNORM:
 487       /*z16_put_tile_rgba((ushort *) packed, w, h, p, src_stride);*/
 488       break;
 489    case PIPE_FORMAT_Z32_UNORM:
 490       /*z32_put_tile_rgba((unsigned *) packed, w, h, p, src_stride);*/
 491       break;
 492    case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 493    case PIPE_FORMAT_Z24X8_UNORM:
 494       /*s8z24_put_tile_rgba((unsigned *) packed, w, h, p, src_stride);*/
 495       break;
 496    case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 497    case PIPE_FORMAT_X8Z24_UNORM:
 498       /*z24s8_put_tile_rgba((unsigned *) packed, w, h, p, src_stride);*/
 499       break;
 500    case PIPE_FORMAT_Z32_FLOAT:
 501       /*z32f_put_tile_rgba((unsigned *) packed, w, h, p, src_stride);*/
 502       break;
 503    case PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED:
 504       /*z32f_s8x24_put_tile_rgba((unsigned *) packed, w, h, p, src_stride);*/
 505       break;
 506    default:
 507       util_format_write_4f(format,
 508                            p, src_stride * sizeof(float),
 509                            packed, util_format_get_stride(format, w),
 510                            0, 0, w, h);
 511    }
 512
 513    pipe_put_tile_raw(pipe, pt, x, y, w, h, packed, 0);
 514
 515    FREE(packed);
 516 }
 517
 518 void
 519 pipe_put_tile_i_format(struct pipe_context *pipe,
 520                        struct pipe_transfer *pt,
 521                        uint x, uint y, uint w, uint h,
 522                        enum pipe_format format,
 523                        const int *p)
 524 {
 525    unsigned src_stride = w * 4;
 526    void *packed;
 527
 528    if (u_clip_tile(x, y, &w, &h, &pt->box))
 529       return;
 530
 531    packed = MALLOC(util_format_get_nblocks(format, w, h) * util_format_get_blocksize(format));
 532
 533    if (!packed)
 534       return;
 535
 536    util_format_write_4i(format,
 537                         p, src_stride * sizeof(float),
 538                         packed, util_format_get_stride(format, w),
 539                         0, 0, w, h);
 540
 541    pipe_put_tile_raw(pipe, pt, x, y, w, h, packed, 0);
 542
 543    FREE(packed);
 544 }
 545
 546 void
 547 pipe_put_tile_ui_format(struct pipe_context *pipe,
 548                         struct pipe_transfer *pt,
 549                         uint x, uint y, uint w, uint h,
 550                         enum pipe_format format,
 551                         const unsigned int *p)
 552 {
 553    unsigned src_stride = w * 4;
 554    void *packed;
 555
 556    if (u_clip_tile(x, y, &w, &h, &pt->box))
 557       return;
 558
 559    packed = MALLOC(util_format_get_nblocks(format, w, h) * util_format_get_blocksize(format));
 560
 561    if (!packed)
 562       return;
 563
 564    util_format_write_4ui(format,
 565                          p, src_stride * sizeof(float),
 566                          packed, util_format_get_stride(format, w),
 567                          0, 0, w, h);
 568
 569    pipe_put_tile_raw(pipe, pt, x, y, w, h, packed, 0);
 570
 571    FREE(packed);
 572 }
 573
 574 /**
 575  * Get a block of Z values, converted to 32-bit range.
 576  */
 577 void
 578 pipe_get_tile_z(struct pipe_context *pipe,
 579                 struct pipe_transfer *pt,
 580                 uint x, uint y, uint w, uint h,
 581                 uint *z)
 582 {
 583    const uint dstStride = w;
 584    ubyte *map;
 585    uint *pDest = z;
 586    uint i, j;
 587    enum pipe_format format = pt->resource->format;
 588
 589    if (u_clip_tile(x, y, &w, &h, &pt->box))
 590       return;
 591
 592    map = (ubyte *)pipe->transfer_map(pipe, pt);
 593    if (!map) {
 594       assert(0);
 595       return;
 596    }
 597
 598    switch (format) {
 599    case PIPE_FORMAT_Z32_UNORM:
 600       {
 601          const uint *ptrc
 602             = (const uint *)(map  + y * pt->stride + x*4);
 603          for (i = 0; i < h; i++) {
 604             memcpy(pDest, ptrc, 4 * w);
 605             pDest += dstStride;
 606             ptrc += pt->stride/4;
 607          }
 608       }
 609       break;
 610    case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 611    case PIPE_FORMAT_Z24X8_UNORM:
 612       {
 613          const uint *ptrc
 614             = (const uint *)(map + y * pt->stride + x*4);
 615          for (i = 0; i < h; i++) {
 616             for (j = 0; j < w; j++) {
 617                /* convert 24-bit Z to 32-bit Z */
 618                pDest[j] = (ptrc[j] << 8) | ((ptrc[j] >> 16) & 0xff);
 619             }
 620             pDest += dstStride;
 621             ptrc += pt->stride/4;
 622          }
 623       }
 624       break;
 625    case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 626    case PIPE_FORMAT_X8Z24_UNORM:
 627       {
 628          const uint *ptrc
 629             = (const uint *)(map + y * pt->stride + x*4);
 630          for (i = 0; i < h; i++) {
 631             for (j = 0; j < w; j++) {
 632                /* convert 24-bit Z to 32-bit Z */
 633                pDest[j] = (ptrc[j] & 0xffffff00) | ((ptrc[j] >> 24) & 0xff);
 634             }
 635             pDest += dstStride;
 636             ptrc += pt->stride/4;
 637          }
 638       }
 639       break;
 640    case PIPE_FORMAT_Z16_UNORM:
 641       {
 642          const ushort *ptrc
 643             = (const ushort *)(map + y * pt->stride + x*2);
 644          for (i = 0; i < h; i++) {
 645             for (j = 0; j < w; j++) {
 646                /* convert 16-bit Z to 32-bit Z */
 647                pDest[j] = (ptrc[j] << 16) | ptrc[j];
 648             }
 649             pDest += dstStride;
 650             ptrc += pt->stride/2;
 651          }
 652       }
 653       break;
 654    default:
 655       assert(0);
 656    }
 657
 658    pipe->transfer_unmap(pipe, pt);
 659 }
 660
 661
 662 void
 663 pipe_put_tile_z(struct pipe_context *pipe,
 664                 struct pipe_transfer *pt,
 665                 uint x, uint y, uint w, uint h,
 666                 const uint *zSrc)
 667 {
 668    const uint srcStride = w;
 669    const uint *ptrc = zSrc;
 670    ubyte *map;
 671    uint i, j;
 672    enum pipe_format format = pt->resource->format;
 673
 674    if (u_clip_tile(x, y, &w, &h, &pt->box))
 675       return;
 676
 677    map = (ubyte *)pipe->transfer_map(pipe, pt);
 678    if (!map) {
 679       assert(0);
 680       return;
 681    }
 682
 683    switch (format) {
 684    case PIPE_FORMAT_Z32_UNORM:
 685       {
 686          uint *pDest = (uint *) (map + y * pt->stride + x*4);
 687          for (i = 0; i < h; i++) {
 688             memcpy(pDest, ptrc, 4 * w);
 689             pDest += pt->stride/4;
 690             ptrc += srcStride;
 691          }
 692       }
 693       break;
 694    case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 695       {
 696          uint *pDest = (uint *) (map + y * pt->stride + x*4);
 697          /*assert((pt->usage & PIPE_TRANSFER_READ_WRITE) == PIPE_TRANSFER_READ_WRITE);*/
 698          for (i = 0; i < h; i++) {
 699             for (j = 0; j < w; j++) {
 700                /* convert 32-bit Z to 24-bit Z, preserve stencil */
 701                pDest[j] = (pDest[j] & 0xff000000) | ptrc[j] >> 8;
 702             }
 703             pDest += pt->stride/4;
 704             ptrc += srcStride;
 705          }
 706       }
 707       break;
 708    case PIPE_FORMAT_Z24X8_UNORM:
 709       {
 710          uint *pDest = (uint *) (map + y * pt->stride + x*4);
 711          for (i = 0; i < h; i++) {
 712             for (j = 0; j < w; j++) {
 713                /* convert 32-bit Z to 24-bit Z (0 stencil) */
 714                pDest[j] = ptrc[j] >> 8;
 715             }
 716             pDest += pt->stride/4;
 717             ptrc += srcStride;
 718          }
 719       }
 720       break;
 721    case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
 722       {
 723          uint *pDest = (uint *) (map + y * pt->stride + x*4);
 724          /*assert((pt->usage & PIPE_TRANSFER_READ_WRITE) == PIPE_TRANSFER_READ_WRITE);*/
 725          for (i = 0; i < h; i++) {
 726             for (j = 0; j < w; j++) {
 727                /* convert 32-bit Z to 24-bit Z, preserve stencil */
 728                pDest[j] = (pDest[j] & 0xff) | (ptrc[j] & 0xffffff00);
 729             }
 730             pDest += pt->stride/4;
 731             ptrc += srcStride;
 732          }
 733       }
 734       break;
 735    case PIPE_FORMAT_X8Z24_UNORM:
 736       {
 737          uint *pDest = (uint *) (map + y * pt->stride + x*4);
 738          for (i = 0; i < h; i++) {
 739             for (j = 0; j < w; j++) {
 740                /* convert 32-bit Z to 24-bit Z (0 stencil) */
 741                pDest[j] = ptrc[j] & 0xffffff00;
 742             }
 743             pDest += pt->stride/4;
 744             ptrc += srcStride;
 745          }
 746       }
 747       break;
 748    case PIPE_FORMAT_Z16_UNORM:
 749       {
 750          ushort *pDest = (ushort *) (map + y * pt->stride + x*2);
 751          for (i = 0; i < h; i++) {
 752             for (j = 0; j < w; j++) {
 753                /* convert 32-bit Z to 16-bit Z */
 754                pDest[j] = ptrc[j] >> 16;
 755             }
 756             pDest += pt->stride/2;
 757             ptrc += srcStride;
 758          }
 759       }
 760       break;
 761    default:
 762       assert(0);
 763    }
 764
 765    pipe->transfer_unmap(pipe, pt);
 766 }
 767
 768
 769 void
 770 pipe_get_tile_ui_format(struct pipe_context *pipe,
 771                         struct pipe_transfer *pt,
 772                         uint x, uint y, uint w, uint h,
 773                         enum pipe_format format,
 774                         unsigned int *p)
 775 {
 776    unsigned dst_stride = w * 4;
 777    void *packed;
 778
 779    if (u_clip_tile(x, y, &w, &h, &pt->box)) {
 780       return;
 781    }
 782
 783    packed = MALLOC(util_format_get_nblocks(format, w, h) * util_format_get_blocksize(format));
 784    if (!packed) {
 785       return;
 786    }
 787
 788    if (format == PIPE_FORMAT_UYVY || format == PIPE_FORMAT_YUYV) {
 789       assert((x & 1) == 0);
 790    }
 791
 792    pipe_get_tile_raw(pipe, pt, x, y, w, h, packed, 0);
 793
 794    pipe_tile_raw_to_unsigned(format, packed, w, h, p, dst_stride);
 795
 796    FREE(packed);
 797 }
 798
 799
 800 void
 801 pipe_get_tile_i_format(struct pipe_context *pipe,
 802                        struct pipe_transfer *pt,
 803                        uint x, uint y, uint w, uint h,
 804                        enum pipe_format format,
 805                        int *p)
 806 {
 807    unsigned dst_stride = w * 4;
 808    void *packed;
 809
 810    if (u_clip_tile(x, y, &w, &h, &pt->box)) {
 811       return;
 812    }
 813
 814    packed = MALLOC(util_format_get_nblocks(format, w, h) * util_format_get_blocksize(format));
 815    if (!packed) {
 816       return;
 817    }
 818
 819    if (format == PIPE_FORMAT_UYVY || format == PIPE_FORMAT_YUYV) {
 820       assert((x & 1) == 0);
 821    }
 822
 823    pipe_get_tile_raw(pipe, pt, x, y, w, h, packed, 0);
 824
 825    pipe_tile_raw_to_signed(format, packed, w, h, p, dst_stride);
 826
 827    FREE(packed);
 828 }